Based on the Dallas Rangemaster with a few mods.  Available in both Silicon and Germanium versions. Very versatile for such a small package with three knobs controlling bass, gain and volume.  Not the cleanest booster but that's not a bad thing. 

Demo by Minimalist Musician

Demo by Matt Foy

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Boost

Straight up Big Muff clones in 1590A sized boxes.  Any style you'd like, ram's head, green Russian, custom or whatever.  True bypass with polarity protection, like all my mini pedals runs off 9v adapter only (center negative 2.1mm).  Current draw ~2mA.  I have two of my own versions, the 'Bullet' which has a lower gain mid range focused tone and the 'Rhino' which is super gainy and scooped sounding perfect for shoegaze.  Also available is the new 'Cherub' version which is based on the opamp muff as used by the Smashing Pumpkins.  Check out the comparison video below, featuring my original '96 bubble font green Russian.​

Demo by  Kevin O'Reilly

Big Muff

Based on the Klon Centaur the Xiphos Overdrive is a super versatile overdrive and boost.  Running on an internal bi polar power supply there's tons of headroom available.  When gain is cranked it's a nice rich midrange heavy overdrive.  Has the same wonderful buffered bypass and a few circuit tweaks to optimize performance.  Comes equipped with a pair of magical Russian D9E germanium diodes. 

Demo by  Jackson Brooksby

Xiphos Overdrive

A highly modified Shin-ei Companion fuzz.  Has a voice control to shift the midrange frequency scoop and a treble control to tame the highs.  Full fuzz all the time and a built in volume boost to go above unity volume.  Internal removable jumper that cuts the bass and gain to make it more useable for guitar.  Shines on bass.  True bypass with polarity protection

Ko. 31 Fuzz - Orange

The KOi overdrive is based on a popluar d-style overdrive but in a 1590A or 1590B sized enclosure with a few improvements.  Has more gain, altered tone control and picks up less radio stations than the original but with the same tasty mosfet clipping and cool voice control.   Demo vids Below, check 'em out. 

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Ko. 31 Fuzz - Orange

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